996 Previous model naturally aspirated Porsche 911 community. Discuss C2, C2s, C4, C4s, Targa and Cabriolets.

Lower the car with stock shocks (modded?)

Thread Tools
 
Rate Thread
 
Old Mar 1, 2009 | 10:44 PM
  #1  
PorschePRH's Avatar
Thread Starter
|
Registered User
Joined: Feb 2005
Posts: 402
Rep Power: 43
PorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to all
Lower the car with stock shocks (modded?)

Has anyone considered machining the stock shocks by the right amount so they don't die from lowering springs like H&Rs?

It seems like a machine shop could make a business out of doing this for Porsche owners -- like some shops modify stock mufflers. If it could be done without disassembling the shocks itself, it would be a lot cheaper than a full spring/shock setup.
 
Old Mar 3, 2009 | 09:22 AM
  #2  
PorschePRH's Avatar
Thread Starter
|
Registered User
Joined: Feb 2005
Posts: 402
Rep Power: 43
PorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to all
Any machinists in the house?

Well, I took off the rear shocks, and machining them looks very possible.

I measured the travel of the suspension in relation to the wheel hub and the shock mounting point and it's exactly a 1:1 ratio. That means if you want to lower your car 1", you would need to lower the threaded section on the shock by 1".

I also tested the metal with a regular file, and it cut very easily on both the shiny part and the threaded section, so there's no challenge there.

So, who here knows how to do creative machining? The threaded section is a no brainer. The question is how to machine the shaft into a smaller diameter so the washer sits lower.

I am thinking you can hold the shaft by the old threaded section and use some kind of grinder and slowly rotate the shaft to get the diameter down. The grinding does not need to be perfect by any stretch, just enough to securely hold the washer. The forces on the shaft never exceed the resistance of the shock, so it's not supporting the suspension in any way.
 
Old Mar 3, 2009 | 12:00 PM
  #3  
c2mojo's Avatar
Registered User
Joined: Aug 2007
Posts: 911
From: Chicago
Rep Power: 55
c2mojo is infamous around these parts
how old are the shocks though? Looks like you have the mechanical skills to do it but wouldn't just buying some Bilstein's HD shocks be better?
 
Old Mar 4, 2009 | 08:45 AM
  #4  
PorschePRH's Avatar
Thread Starter
|
Registered User
Joined: Feb 2005
Posts: 402
Rep Power: 43
PorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to all
the stock shocks only have 25K miles on them, and they are the US030.

it's just a question of where to spend the cash. buying new shocks would solve the same issue.
 
Old Mar 4, 2009 | 11:08 AM
  #5  
Brando's Avatar
Registered User
Joined: Oct 2007
Posts: 1,351
From: Roswell, Georgia
Rep Power: 83
Brando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud of
Cool

Your dampening and rebound rates of the shocks need to be matched up with the spring rates.

Most lowering/sport springs use a higher spring rate and a better matched shock like a Bilstein HD or Sport is needed to match up dampening.
 
Old Mar 4, 2009 | 12:29 PM
  #6  
PorschePRH's Avatar
Thread Starter
|
Registered User
Joined: Feb 2005
Posts: 402
Rep Power: 43
PorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to allPorschePRH is a name known to all
Originally Posted by Brando
Your dampening and rebound rates of the shocks need to be matched up with the spring rates.

Most lowering/sport springs use a higher spring rate and a better matched shock like a Bilstein HD or Sport is needed to match up dampening.
I am not sure I believe that since the PSS9 comes with 9 different rebound rates for a fixed spring rate. Seems to work for many people.
 
Old Mar 4, 2009 | 03:51 PM
  #7  
Brando's Avatar
Registered User
Joined: Oct 2007
Posts: 1,351
From: Roswell, Georgia
Rep Power: 83
Brando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud ofBrando has much to be proud of
Cool

That is the exact point.

It can be adjusted for super soft street to stiff performance mode.

Your stockers will prob be soft. If that is how you drive, it may work great.



Try it........see how it works.
 

Last edited by Brando; Mar 4, 2009 at 04:06 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
PorscheEnthusiast
Automobiles For Sale
2
Nov 13, 2015 02:23 PM
alevine
GT3/GT2
19
Nov 4, 2015 10:05 AM
AJUSA.com
997 Vendor Classifieds
4
Oct 8, 2015 05:50 PM
vr6tee
997 Turbo / GT2
78
Aug 29, 2015 03:52 AM
HolmaN
997
3
Aug 19, 2015 07:32 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -6. The time now is 03:13 PM.